Honors Chemistry I Core Labs

Links:

Purpose:
To observe and graph the effects of temperature on a pure substance during heating and cooling.

Summary:
Students heat lauric acid in a hot water bath until it is completely melted and the temperature rises several degrees. They also measure the temperature as the acid re-solidifies. The results are graphed.

Objectives Links:
1. E: Solids, Liquids, & Gases

Process Skills Checklist

Materials:

• Test tube of lauric acid
• hot water bath apparatus
• thermometer

Safety Concerns:
Goggles and aprons; open flame is used; avoid breathing lauric acid fumes

Revision Date:
Summer 2005